User guide

U S E R G U I D E
90
Data is protected using the following algorithm:
1. Each web page or file that is accessed by the user or an application via the HTTP, HTTPS or FTP protocols, is
intercepted and analyzed for malicious code by Web Anti-Virus. Malicious objects are detected using both
Kaspersky Small Office Security databases and the heuristic algorithm. The database contains descriptions of
all the malicious programs known to date and methods for neutralizing them. The heuristic algorithm can detect
new viruses that have not yet been entered in the database.
2. After the analysis, you have the following courses of action available:
If a web page or an object accessed by the user contains malicious code, access to them is blocked. A
notification is displayed that the object or page being requested is infected.
If the file or web page does not contain malicious code, the program immediately grants the user access to
it.
Scripts are scanned according to the following algorithm:
1. Each script run is intercepted by Web Anti-Virus and is analyzed for malicious code.
2. If the script contains malicious code, Web Anti-Virus blocks this script and informs the user of it with a special
pop-up message.
3. If no malicious code is discovered in the script, it is run.
Web Anti-Virus intercepts only scripts using the Microsoft Windows Script Host functionality.
IN THIS SECTION:
Enabling and disabling Web Anti-Virus ........................................................................................................................... 90
Changing and restoring security level ............................................................................................................................. 91
Changing actions to be performed on detected objects .................................................................................................. 91
Blocking dangerous scripts ............................................................................................................................................. 92
Checking URLs using the databases of suspicious and phishing addresses .................................................................. 92
Using heuristic analysis ................................................................................................................................................... 92
Scan optimization ............................................................................................................................................................ 93
Kaspersky URL Advisor .................................................................................................................................................. 93
Creating a list of trusted addresses ................................................................................................................................. 94
ENABLING AND DISABLING WEB ANTI-VIRUS
By default, Web Anti-Virus is enabled, functioning in normal mode. You can disable Web Anti-Virus, if necessary.
To enable or disable Web Anti-Virus, perform the following steps:
1. Open the main application window.
2. In the top part of the window, click the Settings link.